import java.util.*;
public class Multime 
{
	public HashSet m= new HashSet();
	
    public void adauga(int elem) 
    {
    	m.add(elem);
            
    }
    
    public void sterge(int elem) 
    {
    	m.remove(elem);
            
    }
    public void afiseaza()
    {
            System.out.print(m);
    }
    
    //public void reuniune(Multime m1, Multime m2)
    
       
}
